Caswell runyan radio
 

Hello, I just got a 2 tube regen set and it uses 199 tubes.I can't find a diagram so I am guessing from the smaller 4 pin sockets. Is there anyone that can explain how to use diodes as substitutes and diode part numbers? I will send pics of the unit later this weekend.

Well, i did mean adding transistors in........

Thank you for sharing this :)